Light-shield



0. P. SMITH.

LIGHT SHIELD.

APPLICATION FILED Nov. 13. 1920,

Patented A115519, 1921.

UNITED STATES PATENT oFFTcE..

\ oScAn rEcx SMITH, E WORCESTER, MASSACHUSETTS.

specicatifm of Letters Patent.

-, 'LIGHT-SHIELD.

Patented Aug. 9, 1921.

\- Application filed November 13, 1920. Serial No. 423,972.

To all whom it may concern.'

Be it known that I, OSCAR P. SMITH, a citizen of the United States, and a resident of Worcester, county of .Worcesten and State of ,Massachusetts have .invented a new and Improved Light-Shield, of which the following is a full, clear, and exact demarily designed to keep undesirable light out of a dark room Such as commonly used by photographers, Awhich may,l be temporarily attached to adoor frame without permanent scarring of the wood-work..

A still further object is to provide a device of the character stated, which will be simple and practical in construction, inexpensive to manufacture, and yet one which will eiiiciently perform the function for which it is intended. l

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangementsof parts as will be morev fully hereinafter described and pointed out inr the claims.

In the accompanying drawings:

Figure 1 is a view in elevation of a door frame and a door, Showing my improved Strips in place.

Fi 2 is an enlarged view in section on the l1ne 2-2 of Fig. 1.

Fig. 3 is a perspective view of one of the Sti-lips.

ig. 4 is a fragmentary perspective [view illustrating the different colors of the two faces of my improved strip.

1 represents a door frame to one side of which an ordinary door 2 is hingedly connected as shown at 3. 4, 4 represent vertical strips of molding secured to the door frame and limiting swinging movement of the door in one direction.

My improved strip 5 is preferably made of cardboard or some similar light, flexible material, and is in the form of a narrow strip having a longitudinal fold line 6 adjacent one edge. Suitable indicia Such as 7 may be provided to designate the manner in which the Strip is to be`folded. That side of the strip upon which the indicia are printed, is preferably white and shiny so that it readily reflects .light falling upon it, while the reverse side of the strip is red, and acts as an extra protection to, prevent actinic raysof light from passing therethrough.

The narrow edge of the strip which-is folded back and whichI designate as 8, is preferably cut away at one endfas shown The strips are applied by bendingslightly on the l1ne 6 and gluing the` edges 8 to the molding strips 4:, so that the free edges of the bo'dy portionsof the strips rest lightly against the door as shown clear" y in Fig. 2.

The end of the edge 8 of one, strip will abut against the edge 8 of an adjacent strip, the cut away portion 9 permitting the body portions of the strips t0 overlap as shown at 10, preventing \the entrance of light between the two strips. `\The edges 8 may be gummed ifdesired, so that thestrips can be readily attached to the door frame.

If the strips are applied to the outside of `a dark room door, the red side of the strip is located against the door, and if on the inside, the shiny surface is located against the door as will be readily understood.

To remove the strip or Strips it is merely necessary t o tear themvoff, and with warm water to wipe olf such glue or cardboard as still adheres to the door frame. I thus overcome one disadvantage common in such devices in that by using my Strips the door is not scarred permanently.

Various slight changes and alterations might be made in the general form of the parts described without departing from my invention, and hence Ido not wish to limit myself to the precise details set forth, but shall consider myself at liberty to make such slight changes andv alterations as fairly fall within the spirit and scope of the appended claims.

What I claim is:

1. Asal new article of manufacture, a light excluding strip attachable to a closure frame to prevent light from entering between the closure and frame, said strip being formed of cardboard treated to present a light reflecting and light absorbing surface, said strip having alongitudinal fold line adjacent one edge, and means for attaching the'strip to a closure frame.

2. As a new article of manufacture, a light excluding strip attachable to a closure frame to prevent light from entering Lbetween the closure and frame, said strip being formed of cardboard treated to present a light reflecting and light. absorbing surface, said strip having a longitudinal fold line adjacent one edge, and having adhesive material on one face thereof between the fold line and the adjacent edge.

3. The combination with a closure and a closure frame, of a plurality of light excluding cardboard strips treated to present on one side a light reflecting surface and on OSCAR PECK SMITH. 

